Fort Gibson
- County:
- Muskogee County
- County Seat:
- No
- Area (mi²):
- 13.358
- State:
- Oklahoma
Fort Gibson is a town located in Muskogee County, Oklahoma. Fort Gibson has a 2026 population of 3,814. Fort Gibson is currently growing at a rate of 0.08% annually and its population has increased by 0.05% since the most recent census, which recorded a population of 3,812 in 2020.